Update CacheKey.php (#456)

BUG FIX
mikebronner · Dec 23, 2023 · 4e70c97 · 4e70c97
1 parent 93a013c
commit 4e70c97
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/CacheKey.php b/src/CacheKey.php
@@ -411,7 +411,7 @@ protected function recursiveImplode(array $items, string $glue = ",") : string
  return $result;
  }
 
- private function processEnum(\BackedEnum|\UnitEnum|Expression|string $value): string
+ private function processEnum(\BackedEnum|\UnitEnum|Expression|string|null $value): string|null
  {
  if ($value instanceof \BackedEnum) {
  return $value->value;